Keyboard tray



FIG. 1 is a top perspective view of a keyboard tray showing my new design;

FIG. 2 is a top plan view thereof with the slidng mouse tray housed in a keyboard tray;

FIG. 3 is a top plan view thereof with the sliding mouse tray slid to the right;

FIG. 4 is a top plan view thereof with the sliding mouse tray slid to the left;

FIG. 5 is a side elevational view thereof with the opposite side being substantially identical thereto;

FIG. 6 is a bottom plan view;

FIG. 7 is a front elevational view; and,

FIG. 8 is a rear elevational view. 

The ornamental design for a keyboard tray, as shown and described. 